add support for xchacha20 and xchacha20-poly1305

xchacha is a chacha stream that allows for an extended nonce, which
in turn makes it feasible to use random nonces.

ok tb@

1 files changed, 5 insertions, 1 deletions

diff --git a/src/lib/libcrypto/chacha/chacha.h b/src/lib/libcrypto/chacha/chacha.h
index 8d94e626f8..e2345b2199 100644
--- a/src/lib/libcrypto/chacha/chacha.h
+++ b/src/lib/libcrypto/chacha/chacha.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: chacha.h,v 1.7 2015/12/09 14:07:55 bcook Exp $ */
+/* $OpenBSD: chacha.h,v 1.8 2019/01/22 00:59:21 dlg Exp $ */
 /*
  * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
  *
@@ -46,6 +46,10 @@ void ChaCha(ChaCha_ctx *ctx, unsigned char *out, const unsigned char *in,
 
 void CRYPTO_chacha_20(unsigned char *out, const unsigned char *in, size_t len,
     const unsigned char key[32], const unsigned char iv[8], uint64_t counter);
+void CRYPTO_xchacha_20(unsigned char *out, const unsigned char *in, size_t len,
+    const unsigned char key[32], const unsigned char iv[24]);
+void CRYPTO_hchacha_20(unsigned char out[32],
+    const unsigned char key[32], const unsigned char iv[16]);
 
 #ifdef  __cplusplus
 }